From 1986509550a43c6b58838297bab45a376bd90184 Mon Sep 17 00:00:00 2001
From: Eoin Whelan <eoin.whelan@met.ie>
Date: Tue, 13 Feb 2024 11:16:23 +0000
Subject: [PATCH] Start code diagram

---
 doc/tools/festat.md | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/doc/tools/festat.md b/doc/tools/festat.md
index 84bd044..7c94e18 100644
--- a/doc/tools/festat.md
+++ b/doc/tools/festat.md
@@ -16,7 +16,11 @@ The statistical de-correlation operator D, also known as the balance operator, i
 ## Fortran code structure for FESTAT:
 Figure 1. Flowchart of FASTEM Fortran code.
 ```mermaid
-graph LR
+classDiagram
+
+FESTAT <|-- SUFESTAT
+FESTAT <|-- NMCSTAT
+
 
 ```
 here,